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Mark has written down some thoughts on breakpoints in responsive designs. I share his concern that by settling on just a few breakpoints, there’s a danger of returning to the process of simply designing for some set canvases: here’s my “mobile” layout, here’s my “tablet” layout, here’s my “desktop” layout.

In my experience, not all breakpoints are created equal. Sure, there are the points at which the layout needs to change drastically in order for the content not to look like crap—those media queries can legitimately be called breakpoints. But then there are the media queries that are used to finesse page elements without making any major changes to the layout.

When I was working on Matter, for example, there was really only one major breakpoint, where the layout shifts from one column to two. That’s the kind of breakpoint that you can figure out pretty easily from the flow of your content; just resizing your browser window is usually enough to settle on the point that feels right. But there are lots of other media queries in the Matter stylesheet. Those are there to make smaller adjustments to margins, font sizes …the kind of changes that came about from testing on phones and tablets in the device lab.

It feels a bit odd to call them breakpoints, as though the layout would “break” without them. Those media queries are there to tweak the layout. They’re not breakpoints; they’re tweakpoints.

There’s also an interview with Ethan in which he answers some reader-submitted questions. The final question is somewhat leading:

What devices (smartphones/tablets) and breakpoints do you typically develop and test with?

Ethan rightly responds:

Well, I’m a big, big believer of matching breakpoints to the design, not to individual devices. If we’re after more future-proof responsive designs, we should stop thinking in terms of ‘320px’, ‘480px’, ‘768px’, or whatever – the web’s so much more flexible than that, and those pixels are a snapshot of the web as we know it today. Instead, we should focus on breakpoints tailored to the design we’re working on.

If we begin with some specific canvases (devices), they’re always going to be arbitrary. There are so many different screen sizes and ratios out there that it doesn’t make sense to favour a handful of them out of tradition. 320, 480, 640 …those numbers aren’t any more special than any other screen widths.

So I’ve started taking screenshots at different widths. For the screenshots I posted of the new dConstruct site, I took a series of screenshots from 200 to 1200 pixels in increments of 100.

But really I should be illustrating the responsive nature of the design by taking screenshots at truly arbitrary widths: 173, 184, 398, 467, 543, 678, 832 …the sheer randomness of those kinds of numbers would better reflect the diversity of screen sizes out there.

I think our collective obsession with trying to nail down “common” breakpoints has led to a fundamental misunderstanding about the nature of responsive design: it’s not about what happens at the breakpoints—it’s about what happens between the breakpoints.

Of course, if breakpoints are dead, responsive design is dead, because responsive design relies on breakpoints both in creative workflow and as a key to establishing user-need-and-context-based master layouts, i.e. a minimal layout for the user with a tiny screen and not much bandwidth, a more fleshed-out one for the netbook user, and so on.

I was surprised that he suggested the long-term solution would be a shake-out of screen widths resulting in a de-facto standardisation:

But designers who persist in responsive or even adaptive design based on iPhone, iPad, and leading Android breakpoints will help accelerate the settling out of the market and its resolution toward a semi-standard set of viewports. This I believe.

I don’t think that will happen. If anything, I think we will see even more diversity in screen sizes and ratios.

But more importantly, I don’t think it’s desirable to have a “standard” handful of screen widths, any more than it’s desirable to have a single rendering engine in every browser (yes, I know some developers actually wish for that: they know not what they do).